AQA GCSE biology predicted topics 2026 (higher tier triple)
First things first: You need to learn the whole specification. We cannot say that enough. AQA can ask about any part of the course in any year, and students who do best in their exams are always the ones who have revised broadly rather than trying to second-guess the paper.
That said, if you have already worked your way through most of your revision and you are looking for a way to prioritise the final stretch, it can be useful to know which topics have not come up recently. We went through every question on the 2024 and 2025 AQA GCSE Biology Higher Tier Triple papers (8461/1H and 8461/2H) and mapped each one back to the specification. A handful of topics have had little or no coverage across both years. If you have a spare hour or two near the end of your revision, these are the ones worth giving a little extra attention.
None of this is insider knowledge and none of it is guaranteed. Think of it as a gentle nudge towards the topics where a wobble would hurt most, rather than a shortcut. You have got this.
These predictions are based on past paper analysis, not inside knowledge. AQA can test any topic from the specification in any year. Please revise the whole course and use this list to guide where you spend any extra time.
What this analysis covers
AQA's GCSE Biology specification is split into numbered topic areas. Each one has a reference like 4.1.2.1 for chromosomes or 4.3.1.5 for protist diseases. Every exam paper samples from these areas, but there is no requirement to test everything every year.
We compared the 2024 and 2025 Higher Tier Triple papers question by question and sorted each topic into one of three buckets. Topics with no coverage across both years sit at the top of the list. Topics that appeared briefly in one year but were otherwise quiet are close behind. And topics that were heavily tested in 2025 (like measles and communicable disease spread, peat bogs and biodiversity, plant tropisms, and blood glucose control) are much less likely to carry another big question in 2026, so they are not on our prediction list.
The result is a gentle prioritisation guide. You still need the full spec, but you can feel slightly more confident that the topics below are worth a closer look.
A handful
of specification topics have had little or no coverage across AQA's 2024 and 2025 Higher Triple Biology papers – a nice shortlist to review at the end of your revision
Paper 1 topics worth extra attention
Paper 1 covers cell biology, organisation, infection and response, and bioenergetics. Below are the topics that have been quiet across the last two years, starting with the ones that have not appeared at all.
Not seen in either 2024 or 2025 (Paper 1)
| Topic | Spec ref. | What to revise |
|---|---|---|
| Principles of organisation | 4.2.1 | Cells to tissues to organs to organ systems. Be able to define each level and give examples. Know the difference between a tissue (a group of similar cells) and an organ (a group of tissues working together). |
| Protist diseases and malaria | 4.3.1.5 | Plasmodium is a protist spread by mosquito vectors. Know the life cycle involving the mosquito as a vector, the symptoms, and prevention methods including mosquito nets and insecticides. Every other pathogen type has had airtime in the last two years – protists are the exception. |
If you only revise one extra Paper 1 topic beyond your main plan, make it protist diseases and malaria (4.3.1.5). Every other pathogen type has been examined recently, which makes this the quietest corner of the infection chapter.
Quiet or only lightly tested (Paper 1)
These topics appeared in 2024 but were largely absent from 2025, or received only brief treatment in 2025. They are worth a solid revision session each.
| Topic | Spec ref. | Recent history | What to revise |
|---|---|---|---|
| Cell specialisation | 4.1.1.3 | Tested 2024, absent 2025 | How cells become specialised for particular functions. Examples including sperm cells, nerve cells, root hair cells, and xylem cells. Link structure to function for each. |
| Cell differentiation | 4.1.1.4 | Tested 2024, absent 2025 | Differentiation in animals mostly occurs in early development. Most plant cells retain the ability to differentiate throughout life. Know the difference between animal and plant differentiation. |
| Chromosomes | 4.1.2.1 | Brief 2024, absent 2025 | Human body cells contain 23 pairs of chromosomes. Each chromosome carries many genes. Understand the relationship between genes, chromosomes, and DNA. |
| Mitosis and the cell cycle | 4.1.2.2 | Tested 2024, absent from Paper 1 in 2025 | Stages of the cell cycle including interphase, mitosis, and cytokinesis. Importance for growth and repair. Calculating mitotic index from microscope images. |
| Coronary heart disease, stents, and statins | 4.2.2.4 | Tested 2024, absent 2025 | Layers of fatty material build up in coronary arteries. Stents hold arteries open. Statins reduce blood cholesterol. Know the advantages and disadvantages of each treatment. |
| Plant tissues | 4.2.3.1 | Tested 2024, absent 2025 | Epidermal tissue, palisade mesophyll, spongy mesophyll, xylem, phloem, and meristem tissue. Know the function of each and where it is found. |
| Plant organ system (transpiration and translocation) | 4.2.3.2 | Tested 2024, absent 2025 | Xylem transports water and minerals (transpiration). Phloem transports dissolved sugars (translocation). Factors affecting transpiration rate including light, temperature, humidity, and air flow. |
| Bacterial diseases (salmonella and gonorrhoea) | 4.3.1.3 | Tested 2024, absent 2025 | Salmonella causes food poisoning and is spread by contaminated food. Gonorrhoea is a sexually transmitted infection treated with antibiotics, though antibiotic-resistant strains are emerging. |
| Antibiotics and painkillers | 4.3.1.8 | Brief in 2025 (aspirin origin and antibiotic-testing practical context) but no dedicated question on how antibiotics work or why they cannot treat viruses | Painkillers treat symptoms but do not kill pathogens. Antibiotics kill bacteria but cannot destroy viruses. Know why antibiotics should not be prescribed for viral infections. |
| Photosynthesis equation and starch test | 4.4.1.1 | Tested 2024, absent 2025 (the 2025 question was on rate and limiting factors, not the equation or starch test) | Word and symbol equations for photosynthesis. Testing a leaf for starch using iodine. Know the steps of the starch test including destaining with ethanol. |
| Uses of glucose from photosynthesis | 4.4.1.3 | Tested 2024, absent 2025 | Glucose is used for respiration, converted to starch for storage, used to make cellulose for cell walls, combined with nitrate ions to make amino acids, and stored as lipids (fats and oils). |
Paper 1 final-stretch checklist
Tick these off once you have revised each one and tried at least one practice question. Start at the top.
- Protist diseases and malaria – describe how Plasmodium is spread by mosquito vectors and explain why malaria is hard to control
- Principles of organisation – define cell, tissue, organ, and organ system with examples at each level
- Cell specialisation – explain how the structure of sperm, nerve, root hair, and xylem cells relates to their function
- Cell differentiation – compare differentiation in animals and plants
- Chromosomes – explain the relationship between DNA, genes, and chromosomes
- Mitosis and the cell cycle – name each stage and practise calculating mitotic index
- Coronary heart disease – describe stents and statins with advantages and disadvantages of each
- Plant tissues and organ system – label xylem and phloem in a diagram and explain transpiration and translocation
- Bacterial diseases – describe salmonella and gonorrhoea including symptoms, spread, and treatment
- Antibiotics and painkillers – explain why antibiotics cannot treat viral infections
- Photosynthesis – write the equations and describe the starch test step by step
- Uses of glucose – list five ways plants use the glucose produced by photosynthesis
Paper 2 topics worth extra attention
Paper 2 covers homeostasis and response, inheritance, variation and evolution, and ecology. This paper has more quiet areas than Paper 1, which is actually good news – it means there are clear places to aim your final revision.
A quick note before the list: The 2025 paper leaned heavily on ecology (peat bogs and biodiversity, 9 marks), plant tropisms, genetic crosses, and blood glucose control. Those areas are much less likely to carry another major question in 2026, so they are not on our list below.
Not seen in either 2024 or 2025 (Paper 2)
These are the gaps on Paper 2. There is no need to panic at the length – they are manageable in small focused sessions of 15 to 20 minutes each.
| Topic | Spec ref. | What to revise |
|---|---|---|
| Homeostasis definition and negative feedback | 4.5.1 | Homeostasis is the regulation of internal conditions to maintain optimum functioning. Know why it matters, including control of blood glucose, body temperature, and water levels. Understand the concept of a set point and negative feedback. (Note: Blood glucose control itself was tested in 2025, so focus here on the general definition and the negative feedback idea.) |
| DNA, the genome, and the Human Genome Project | 4.6.1.4 | The genome is the entire genetic material of an organism. The Human Genome Project mapped all human DNA. Know its benefits including identifying genes linked to disease, developing personalised medicine, and understanding evolutionary relationships. (The 2025 paper touched mutations via a tyrosinase example, but not the Human Genome Project.) |
| Selective breeding | 4.6.2.3 | Choosing organisms with desirable characteristics and breeding them together over many generations. Examples include disease resistance in crops, high milk yield in cattle, and docile temperament in dogs. Know the risks including reduced genetic variation. |
| Cloning techniques | 4.6.2.5 | Cuttings, tissue culture, embryo transplants, and adult cell cloning (Dolly the sheep). Know the steps and advantages and disadvantages of each. |
| Mendel, Watson and Crick, and the development of understanding | 4.6.3.3 | Mendel's experiments with pea plants laid the foundation for genetics. Watson and Crick determined the structure of DNA. Know how scientific understanding develops through peer review and publication. |
| Antibiotic resistance as evidence for evolution | 4.6.3.4 | Fossils, antibiotic-resistant bacteria, and anatomical similarities provide evidence for evolution. Understand how antibiotic resistance develops through natural selection and why it is evidence for evolution in action. (The 2025 paper tested fossils under 4.6.3.5, but not antibiotic resistance itself.) |
| Resistant bacteria and MRSA | 4.6.3.7 | MRSA is methicillin-resistant Staphylococcus aureus. It developed resistance through natural selection. Know how to reduce the rate of development of resistant strains, including not overprescribing antibiotics and completing courses. |
| Woese and the three-domain classification system | 4.6.4 | Linnaeus developed the seven-level classification system using binomial naming (lightly tested in 2025). Woese proposed the three-domain system (Archaea, Bacteria, Eukaryota) based on biochemical evidence – and the three-domain system specifically has not been tested. |
| Carbon cycle and water cycle | 4.7.2.2 | Draw and label the carbon cycle showing photosynthesis, respiration, combustion, and decomposition. Know how carbon moves between the atmosphere, living organisms, and fossil fuels. Understand the water cycle and its key processes. |
| Waste management and pollution | 4.7.3.2 | Land pollution from landfill and toxic chemicals. Water pollution from sewage, fertilisers, and toxic chemicals. Air pollution from smoke and acidic gases. Know how each type of pollution affects living organisms. |
| Deforestation | 4.7.3.4 | Large-scale deforestation in tropical areas to provide land for cattle and rice fields, and to grow crops for biofuels. Leads to loss of biodiversity, increased carbon dioxide in the atmosphere, and loss of habitat. |
| Trophic levels | 4.7.4.1 | Producer, primary consumer, secondary consumer, tertiary consumer, apex predator. Know the definitions and be able to assign organisms to the correct trophic level in a food chain or food web. |
| Factors affecting food security | 4.7.5.1 | Increasing human population, changing diets, new pests and pathogens, environmental changes, sustainability concerns, and conflict. Know how each factor threatens food security globally. |
| Sustainable fisheries | 4.7.5.3 | Fish stocks must be maintained at a level where breeding continues. Control methods include fishing quotas to limit catches and minimum net sizes to allow young fish to reach breeding age. |
| Required Practical 10 – decay investigation | 4.7.2.3 (RP) | Investigate the effect of temperature on the rate of decay of fresh milk by measuring pH change using a pH meter or indicator. Know the method, variables, and how to interpret results. |
Five of the bigger gaps on Paper 2 are selective breeding, cloning, the carbon cycle, MRSA, and Required Practical 10 on decay. If you want a target list to revise in your last week, start there.
Quiet or only lightly tested (Paper 2)
These topics appeared in 2024 but were absent or very lightly tested in 2025. They are strong candidates for a closer look in 2026.
| Topic | Spec ref. | Recent history | What to revise |
|---|---|---|---|
| Control of body temperature | 4.5.2.4 | Not tested as a thermoregulation question in 2025 (body temperature appeared only as context for enzyme activity) | Thermoregulatory centre in the brain monitors blood temperature. Vasodilation and vasoconstriction control heat loss. Sweating and shivering as responses. Know the negative feedback loop. |
| Human endocrine system and glands | 4.5.3.1 | Only a 1-mark prompt in 2025 (name another pituitary hormone) | Pituitary gland as the master gland. Roles of thyroid, adrenal glands, pancreas, ovaries, and testes. Hormones travel in the blood to target organs. Know the location and function of each gland. |
| Hormones in human reproduction and the menstrual cycle | 4.5.3.4 | Tested 2024, absent 2025 | Roles of FSH, LH, oestrogen, and progesterone. How the four hormones interact to control the menstrual cycle. Be able to interpret a graph showing hormone levels over 28 days. |
| Contraception | 4.5.3.5 | Tested 2024, absent 2025 | Hormonal methods (pill, implant, injection, IUD). Barrier methods (condoms, diaphragm). Surgical methods (sterilisation). Know how each prevents fertilisation or implantation, with advantages and disadvantages. |
| Hormones to treat infertility (IVF) | 4.5.3.6 | Tested 2024, absent 2025 | FSH and LH can be given as a fertility drug to stimulate egg release. IVF involves collecting eggs, fertilising outside the body, and implanting embryos. Know the steps of IVF, success rates, and ethical considerations. |
| Feedback systems – thyroxine and adrenaline | 4.5.3.7 | Tested 2024, absent 2025 | Thyroxine regulates metabolic rate through a negative feedback loop with TSH. Adrenaline prepares the body for fight or flight. Know how negative feedback maintains stable conditions. |
| Plant hormones in agriculture | 4.5.4.2 | Tropisms were tested in 2025 (4.5.4.1) but the agricultural applications (4.5.4.2) were not | Auxins as weedkillers and rooting powder for cuttings. Ethene for ripening fruit. Gibberellins for seed germination and flower production. Know specific uses with examples. |
| Inherited disorders (cystic fibrosis and polydactyly) | 4.6.1.7 | A genetic cross appeared in 2025 (rabbit fur colour) but not the named inherited human disorders | Polydactyly is caused by a dominant allele. Cystic fibrosis is caused by a recessive allele. Draw Punnett squares and calculate the probability of offspring being affected. |
| Speciation | 4.6.3.2 | Tested 2024, absent 2025 | Geographic isolation separates populations. Different mutations and environmental conditions lead to natural selection favouring different characteristics. Eventually the populations can no longer interbreed – they have become separate species. |
| Biotic factors | 4.7.1.3 | Only abiotic factors were tested in 2025 (fieldwork question on daisies) | Competition, predation, availability of food, and new pathogens. Know how each biotic factor affects the population size of a species and give examples. |
| Adaptations | 4.7.1.4 | Only touched briefly in 2025 via a melanin / UV protection prompt | Structural, behavioural, and functional adaptations. Examples from extreme environments including desert animals and deep-sea organisms. Explain how each adaptation increases the chance of survival. |
| Decomposition | 4.7.2.3 | Tested 2024, absent 2025 | Rate of decay is affected by temperature, moisture, oxygen availability, and the number of decomposers. Link to the required practical on milk decay and pH change. |
| Pyramids of biomass | 4.7.4.2 | Tested 2024, absent 2025 | Pyramids of biomass show the mass of living material at each trophic level. They are always pyramid-shaped because energy is lost at each stage. Be able to draw and interpret them. |
| Transfer of biomass | 4.7.4.3 | Tested 2024, absent 2025 | Biomass is lost at each trophic level through respiration, excretion, and egestion. Calculate the efficiency of biomass transfer between trophic levels. Typically only around 10% of biomass is passed on. |
| Farming techniques | 4.7.5.2 | Tested 2024, absent 2025 | Modern farming uses pesticides, herbicides, and fertilisers to increase yield. Biological control uses natural predators. Hydroponics grows plants without soil. Know the advantages and disadvantages of each method. |
| Mycoprotein and biotechnology | 4.7.5.4 | Genetic engineering of bacteria was tested in 2025 (hGH production) but mycoprotein specifically was not | Mycoprotein (Quorn) produced from Fusarium fungus in fermenters. Know how fermentation in biotechnology can improve food security alongside GM crops. |
Paper 2 final-stretch checklist
There are a few more items here than on the Paper 1 list. Work through the 'not seen' ones first, then the 'quiet' list.
- Homeostasis – define it and explain why controlling internal conditions matters (negative feedback, set points)
- DNA, the genome, and the Human Genome Project – describe what it mapped and its benefits
- Selective breeding – explain the process over several generations and the risk of reduced genetic variation
- Cloning – describe cuttings, tissue culture, embryo transplants, and adult cell cloning with advantages and disadvantages
- Mendel, Watson and Crick – explain how their work contributed to our understanding of genetics
- Antibiotic resistance – explain how it develops through natural selection and why it is evidence for evolution
- MRSA – describe how resistant bacteria develop and how to slow the spread of resistance
- Woese and the three domains – explain Archaea, Bacteria, Eukaryota and why biochemical evidence led to this system
- Carbon cycle – draw and label the cycle with all flows
- Waste management and pollution – describe land, water, and air pollution with examples
- Deforestation – explain causes and consequences
- Trophic levels – define producer, consumer, and apex predator and assign organisms correctly
- Food security and sustainable fisheries – list factors that threaten food security and explain quotas / net sizes
- Required Practical 10 – describe the milk decay investigation including method, variables, and expected results
- Endocrine system – name the major glands and their hormones
- Menstrual cycle – trace FSH, LH, oestrogen, and progesterone over 28 days
- Contraception and IVF – compare methods and describe the steps of IVF
- Thyroxine and adrenaline – explain negative feedback using thyroxine as an example
- Plant hormones in agriculture – describe uses of auxins, ethene, and gibberellins
- Inherited disorders – complete Punnett squares for polydactyly and cystic fibrosis
- Speciation – explain how geographic isolation leads to new species forming
- Biotic factors and adaptations – give examples of structural, behavioural, and functional adaptations
- Decomposition and biomass – explain factors affecting decay rate and biomass transfer efficiency
- Farming techniques and mycoprotein – compare biological control, GM crops, and mycoprotein production
How to use this list without panicking
A list of topics is only useful if you know what to do with it. Here is a simple, low-stress approach.
First, go through each topic and honestly rate your confidence from 1 to 5. Any topic below a 3 goes to the top of your revision plan. There is no point going over what you already know well when there are clearer gaps to fill.
Second, use active revision. Do not just re-read your notes. For each topic, try to write out everything you know from memory, then check against your notes or a Cognito video. Retrieval practice is far more effective than passive reading, and the research on this is very clear.
Third, work in short sessions. You do not need to block out three hours. Fifteen to twenty minutes on one topic, followed by a break, is plenty. You will retain more from four focused 20-minute sessions than from one exhausted 80-minute session.
Finally, breathe. The fact that you are reading this article and thinking about your revision strategy puts you ahead of most students. You have time to cover these topics properly, and the specification is entirely manageable when you break it into small, focused sessions.
What about topics that were tested recently?
Topics that appeared heavily in 2025 – measles and the spread of disease, digestion and enzymes, osmosis (RP3), photosynthesis rate, circulatory system, stem cells, monoclonal antibodies, plant tropisms, peat bogs and biodiversity, genetic crosses, and blood glucose control – are less likely to carry another major question in 2026. But they can still appear in smaller ways, so do not skip them entirely.
AQA GCSE Biology has a fixed specification that must be sampled comprehensively over time. Topics absent for two consecutive years are statistically a little more likely to appear next, and that is where a final burst of revision effort will have the greatest return. But every student who does well in their exams does so because they revised broadly and thoroughly – not because they only revised predicted topics.
